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IF… OR IF… in a windows batch file
... OR in an IF statement WinXP Batch Script
Final addendum - I almost forgot my favorite technique to test if a variable is any one of a list of case insensitive values. Initialize a test variable containing a delimitted list of acceptable values, and then use search and replace to test if your variab...
Setup RSpec to test a gem (not Rails)
...nt?
I am not using jeweler or such tools. I just used Bundler ( bundle gem my_gem ) to setup the structure for the new gem and edit the *.gemspec manually.
I also added s.add_development_dependency "rspec", ">= 2.0.0" to gemspec and did a bundle install .
...
Get first key in a (possibly) associative array?
...s the best way to determine the first key in a possibly associative array? My first thought it to just foreach the array and then immediately breaking it, like this:
...
How do you calculate log base 2 in Java for integers?
... to. For example, Math.ceil(Math.log(1<<29) / Math.log(2)) is 30 on my PC where mathematically it should be exactly 29. I didn't find a value for x where (int)(Math.log(x)/Math.log(2)) fails (just because there are only 32 "dangerous" values), but it does not mean that it will work the same w...
In PowerShell, how do I define a function in a file and call it from the PowerShell commandline?
...
Try this on the PowerShell command line:
. .\MyFunctions.ps1
A1
The dot operator is used for script include.
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AngularJS - placeholder for empty result from filter
...the trick using ng-show
HTML:
<div ng-controller="Ctrl">
<h1>My Foo</h1>
<ul>
<li ng-repeat="foo in foos">
<a href="#" ng-click="setBarFilter(foo.name)">{{foo.name}}</a>
</li>
</ul>
<br />
<h1>My Bar</h1>
<u...
How to find all combinations of coins when given some dollar value
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I looked into this once a long time ago, and you can read my little write-up on it. Here’s the Mathematica source.
By using generating functions, you can get a closed-form constant-time solution to the problem. Graham, Knuth, and Patashnik’s Concrete Mathematics is the book for...
Is it alright to use target=“_blank” in HTML5?
... site). I often want to jump back and forth between the two without losing my place in the original article. target="_blank" is perfect for this. Leaving the page and having to alternately reload each page (often losing my place in either page), is not. Yes, I know that I can right-click on the lin...
Eclipse “Invalid Project Description” when creating new project from existing source
...d everything like cleaning and restarting, but nothing worked. I looked in my workspace directory, but there are no traces for the old project.
There are several questions around this problem such as this Attempting Android Notepad Tutorial - Exercise 1 - More problems , but none of the answers wor...
Cannot read configuration file due to insufficient permissions
I've recently encountered an error trying to host my asp.net site with IIS. I have found a solution that many swear by.
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